Margin-stop indicators.



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ALVAH C. ROEBUCK, F WOODSIOCK, ILLINOIS, ASSIGNOR T0 WOODSTOCK TYPEW'RITIER COMPANY, OF WOODSTOCK, ILLINOIS, A CORPORATION OF ILLINOIS. l

MARGIN-STOP INDICATOR.

Application filed May 19, 1915.

To all 'whom 15 may concern:

Be it known that I, ALVAH C. ROEBUCK, a citizen of the United States, residing at lVoodstock, in the county of McHenry and State of Illinois, have invented certain new f and' useful Improvements in Margin-Stop Indicators, of which the following is a specitication.

This invention relates to typewriters, land more particularly to the margin stop mechanism. The present invention is .to provide an improved construction, combination and arrangement of parts by means of which the position of the margin stop may be easily ascertained by an operator from the front of the typewriter.

Other objects will appear hereinafter.

In the accompanying drawings, Figure 1 shows a view, partly in section, of that portion of a typewriter' to which the present invention is applied, with a margin stop indicater constructed in accordance with the principles of this invention; Fig. 2 is a top view of the margin sto-p indicator; and Fig. 2 is a side elevation of the same.

W'hen the margin stop mechanism is located at the rear of the typewriter, it is invisible to an operator at the front of the typewriter for the reason that it is 'mountcd at the lower rear side of the carriage behind the platen and below the -paper table. For this reason it cannot be conveniently adjusted by an operator from the front of the typewriter without rising from his seat or going to the rear of the machine. The present. invention overcomes this difficulty by providing an indicator arm in connection with the margin stop proper and an indicator har at the upper portion of the shiftable frame, both of which are clearly visible from the front of the machine When the shift. frame is in any position, by simply rotating the paper table at its pivot.

In the drawings, the numeral 4 designates generally that portion of a typewriter frame in which a carriage 5 is mounted by means of ordinary ways (3. Mounted in the carriage is a shift frame having an end piece 7 at. each end in which a platen 8 is rotatably mounted and a paper table 9 is pivoted in such position that it may be rotated against the platen, as indicated by the dotted outline in Fig. 1. The shift frame :is oscillated by means of a shift' bar 10 in any Well known manner.

Specification of Letters Patent.

Patented Feb. 19, IQIS.

Serial No. 29,062.

Secured in the carriage is a margin stop bar 11 and secured in the shiftA frame and forming a part thereof is a graduated bar 12 which is parallel to the margin stop bar preferably directly above it and at the rear of the paper table 9 where it constitutes a stop for the table limiting the rearward movement thereof. The margin stop bar 11 is usually close to the frame 4: at the rear of the carriage behind the platen 8 and below the paper table where it cannot be easily seen from the front of the machin". The graduated bar 12 being located above the margin stop bar 11 and in the shift frame is plainly visible from the front of the machine nhen the paper table is rotated against the platen and this bar is graduated on top so that the graduations are visible and readable from the front of the typewriter.

Mounted on the margin stop bar 11 is a margin stop 13 provided With a pivoted catch 1I by means of which the position of the margin stop may be adjusted along the bar, the bar being commonly provided with notches or teeth 15 which are engaged by the pivoted catch 14. Secured to the margin stop 13 is an arm or indicator 16 preferably formed of metal and of such .a length that itA extends above the indicator bar 12.

offers no obstruction nor does it engage With l i the indicator bar 12, butsimply lies adjacent the graduated edge of4 the bar so that the position of the margin stop is clearly visible from the front of the typewriter when the` paper table is rotated against the platen.

The margin stop may then be adjusted along the stop bar 11 by holding the paper table forward with one hand and by simply placing the other hand over the platen and paper table and operating the catch 14 to disengage it from the bar 11 so that the margin stop may be freely moved to any desired position, as indicated by the arm 16 with respect to the indicator bar 12.

What I claim isz. l

1. In a typewriter, a platen carriage, a paper table pivotcd therein, a margin stop adjustably mounted below the table, and an upwardly extending indicator 'secured to the margin stop normally behundthe table and invisible from the front f the typewriter and visible when the table is rotated forwardly on its pivots.

2. ln a typewriter, a carriage, a platen pivoted in the carriage, a bar behind the platen, a margin stop adjustable in the carriage, an indicator extending upwardly from theI margin stop, anda paper table pivoted between the bar and the platen and limited in movement in opposite directions by them, and normally covering the indicator butI uncoveringv it whenfthe table is rotated against the platen.

In a typewriter, a carriage, a platen and a paper table/'pivoted in the carriage, a bar behind the table graduated on top, a margin stop adjustably mounted below the said bar, and an indicator extending above and adjacent the bar normally carried by the table but visible from/the front ofthe Vtypewriter when the table` is rotated for-J wardly.

4. In a typewriter, a stop bar, and a parallel graduated bar above it, a margin stop -and an indicating arm extending adjacent the graduated bar, and a pivoted paper table normally covering the graduated bar and the said arm whichv are both within the vision of an operator at the .front lof the typewriter when the paper 'table is' turned forwardly.

-5. In a typewriter, al carriage,`a frame shiftable therein, a stop bar in the carriage, a graduated bar inthe frame, a margin stop adjustable on the stop bar, an indicator arm extending from the stop to the side of the bar to show the position of the stop, and a paper table pivoted in the frame normally covering the arm and the bar in any position of the frame but rotatable forwardl to uni cover them for an operator seate at the front of the typewriter.

In a typewriter, the combination with a` carriage, of a margin stopv adjustably mounted in the carriage having an extending indicating arm, a graduated indicator bar adjacent which the'upper end of the -arm extends, and a paper table pivoted adjacent the bar by which the movement of the table is limited in one direction.

7; In a typewriter, tlie combination with a carriage, of a shiftable frame mounted in the carriage, a stop bar fixed in the 0er-,

riage, a graduated bar fixed in the frame, a paper table pivoted in the frame and movable against the graduated bar, the stop bar being below the paper table and invisible to the operator from the front of the` typewriter and the graduated bar being Visible from the front of theA machine when the paper table is rotated therefrom, amargin stop adjustable on the stop bar, and an indicator arm extending from the margin stop' and at the side of the graduated bar to show the position of the margin stop with respect to the graduated bar regardless of the shifted position of the frame. v

In testimony whereof I have signed my namer'to.,thisvspeciflcatiom in the presence of two subscribing witnesses, on this 12th day o May, 1915.

ALVAH C. ROEBUCK. 

